Apparatus for testing cartridges.



. Pacenteg! Bes. i9, 95%. P. PNDRF. APPARATUS FR TESTING CRTRIGES. (Application le Mar, 8, 1899.) lNo Modei.)

2 Sheots-Ssee i 5%. :$39,432. Pa'entede. i9, i899. P. FNERF.

APPARATUS FR TESTNG CARTRIDGES.

mp naman med Mdr. B. 1599.)

{o Mods!) 2 Sheets-Sheet 2 iiivrren Sterns arntvvr Fries.

raunroirnonr, or conssivirz, GERMANY.

APPARATUS FOR TESTiNG CRTRlDGES.-

SPECIFICATION forming part or" Letters Patent No. 639,432, dated December 19, 1899.

Application filed March 8, 1899. Serial No. 708,214. (No model.) Y

To all w71 ont it may concern:

p Be it known that I, PAUL PONDORF, manufacturer, a subject of the Emperor of Germany, residing at Goessnitz, SaXe-Altenbu rg, German Empire, have invented certain new and useful Improvements in Apparatus for Testing Cartridges; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. l

This invention relates to means for testing the condition of .the firing or flash holes of metal cartridge-cases; and the essential features of the said invention may be briefly stated as follows: At a suitable part of the drilling-machine 'are arranged .two needles, each of which is movable endwise independlantiy of the other and is provided with a projection or stop rigidlysecured to or formed integral therewith. The diameters of the lower ends of the said needles are equal to the diameters of the firing or iash holes to be drilled, while they are formed toa gradual taper or increase in thickness somewhat toward the rear. Now, when it happens that the requisite holes in the cartridge-case have not been made in consequence of the drill having broken, for example, or have not been made deep enough, or are too narrow or too wide, one or both of said stops, as the case maybe, isor are either arrested suiiiciently far back or allowed to proceed a suliicient distance forward to set in operation certain arrestingT or locking mechanism by means of which the drilling-machine is thrown out of gear and stopped. If, however, the two firing or flash holes of the cartridge-eases being tested are bored t0 the required'dimensions, both needles will enter the cartridge-case for such a distance as will cause. them to be arrested in apredetcrmiucd intermediate position, when the stops will check thc locking or arresting mechanism and prcvcntits cominginto operation.

By the arrangement oi' parts hcreinbcfore described the drillingmaehine can only reinainin uninterrupted operation so long as the drill worms ina uniform and satisfactory manner, while the entire machine comes to a standstill immediately a single article in con rse of treatment proves tobe defective.

. In the accompanyingd rawingsnvhich represent a flash or firing hole drilling machine fitted with an arrangement constructed according to the present invention for carrying out the novel operation above described,

Figure l is a side elevation of .the drillingmachine. Fig. 2 is an enlarged detail View illustrating the arrangement of the combined needles and stops. Fig. 3 is an end elevation of parts, drawn to a reduced scale and illustrating more particularly the strap-guide. Fig. 4 is a plan of the drilling-machine, and Fig. 5 is a detail view of the parts of the arresting mechanism acted upon by the stops.

In the several figures, in which like parte are indicated by similar letters of reference, the parts of the machine for fastening or mount-ing the,cartridge-cases in position, for

moving and centering the mounting, clamping, or gripping device, and for operating the drills are only shown in outline, as said parte are common to existing machines of this class and which are well known, so that they do not come within the scope of the present invention.

The drilling-machine, together with the above -mentioned apparatus for testing the condition of the flash or firing holes, is erectedupon a base or bed plate c and carries upon its shaft b a gripping or clamping device or holder b, wherein the cartridge-cases to be operated upon are inserted and securely locked or clamped in position at l by mea-ns of any suitable contrivanoe. )lotion is imparted to the shaft b from the strap or band 0 through the medium of the shaft b2, worm b3, worm-wheel b, Fig. 3, and a toothed seg-l ment e', mounted on the shaft or spindlefof the said worm-wheel, which segment gears with the toothed wheel s on the shaft 1)' and ateach revolution of the shaft'f turns the said wheel for a distance equal to one-sixth of its eircmnference, so that consequently the cartridge-case-gripping device b is also turned sixty degrees at each revolution ofthe shaft.

The toothed segment .e is a wheel having teeth on a part only of its periphery. It is not fully shown, as any approved mechanism can be used which will rotate thel shell-holder b intermittently.

.The cartridge-cases placed in the holder at i successively take uptheir position in front IOO fIs

of'the two drills `c, as at Zand 3, and are here provided with tiring o'r flash holes in 'the wellknown manner, after which the cases move up to the testing-needles at 4, where the condition of their firing or flash holes is ascertained, and are lastly removed from the gripping.. device or holder.

The test is performed by means ef the following arrangement ofv parts: Upon a suitable part of the frame ofthe machine are provided two slides or carriages d d', which carry needles d d, by means of which the holes are tested, and these needles are controlled,

.leaves the position in which it is shown in Fig. 1 in continuation of its revolution, the springs d4 d5 push forward the carriages d and d toward the clamping device or holder b, the motion of which has in the meantime been arrested, and in so doing move forward the intermediate piece or pusher d6 and the leverarm b", and the needles d d are now caused to enter the vring-holes with the following results: If the firing-holes have been bored normally-that is to say, of the required dimensions-the tapering needles d" will enter said holes to a predetermined depth and be thus arrested in a predetermed intermediate position, with the result that the stops e e', projecting from the carriages or slides d cl,will likewise be arrested in a given intermediate situation, the dimensions of the parts being so proportioned that the said stops e e when in this intermediate position shalhexactly be facing the 'front ends of the two slides h 7L.

At each revolution of the shaft f these slides are moved once toward the carriages CZ CZ", in-

asmuch as the cam f2 once in every revolution releases the double-armed lever g', engag-` ing with the noses or tappets 7trv' thereby allowing the springs h2 into operation. When the stops c e take up the intermediate position above described, which indicates that the firing or flash holes in the rear,

have been drilled in a proper manner, theV ends of the two slides h 71, come against the corresponding ends of the stops e e', and the mechanism hereinafter described, by means ofwhich the machine is arrested in ease of defective drilling is prevented from coming into operation, while the cam f;l by means of its rise immediately pushes the two slides h h back into their rearward or retracted position even before the needles d" d have had time to leave the drilled holes after the completion of the test. If, however, owing to the h3 to comev defective operation of the machine 'no h'oles have been drilled at all or they have been made too wide or too narrow, or if there should be any other defect in one of the holes, or if both holes are defective from some cause, then, according to circumstances, one or both of the needles d will either be prevented from entering'the hole or holes far enough or will be allowed to advance too far, as the case may be, the result in all cases being that both needles will fail to stopprecisely in the intermediate position above described.

The operation of themechauism forming the subject of the present invention willvin .Y

ered, and it will therefore suffice herein to describe only the case exemplilie'd in Fig. 4, in which neither of the firing-holeshas been partially or entirely formed in consequencefor example, of the perforating tool-or drill having become broken.- needles d" cannot enter the cartridge-cases, and therefore the stops e e' remain in the position representedin Fig. 4. When the cam f2, in the revolution of the shaft f, releases the lever g', and consequently the slides h and h', these slides are driven by the springs h2 and h toward the sliding carriages d d' without meeting with any resistance on the part of the stops e e. The slides h h therefore advance until the inclines Z l' meet the incline 'm'of the fork -shaped guide of the strap or band o, and in lthe meantime the spring-catches t' t" have taken up their posi- In this ease the IOO tion 'beyond the vertical pin ofthe doublearmed lever g. As the shaft f continues to revolve, carrying with it the cam f', this cam,

throughv the medium of the lever g, moves the catches i if and also the slides h h' farther toward the carriages cl d", so that the said inclines Z Z force back the incline 'm and shift the-strap guide or fork n, which, assisted by the Weight g2, transfers the strapV o to the loose pulley s, thereby automatically throwing the whole mechanism out of gear and' stopping the machine.

What I claim is- 1. In apparatus for testing cartridge-shells, the combination, with mechanism for stopping the machine to which the testing apparatus is applied provided'with a slidefor aetuating it, and means `for reciprocating the said slide; of a slidable carriage carrying a testing-needle and provided with a stop which arrests the said sldewhen the said testingneedle has permitted the carriage to move to a prearrangcd extent, thereby preventing the said stopping mechanism from being operated to stop the machine, substantially as set fort-h.

2. In apparatus for testing cartridge-shells,

the combination, with a slidable carriage provided with a stop and earryinga testing-'needle; of a slide arranged crosswisc of the path of the said stop, mechanism forstopping the machine to which the testing apparatus is applied controlled by the said slide,.and means IIO IZO

for reciprocating the said slide, said stopping mechanism being operated whenever the said slide misses the said stop, substantially as set forth.

3. In apparatus for testing cartridge-shells, the combination, with a slidable carriage provided with a stop and carryinga testing-needle having a tapered point which will enter the normal firing-hole of the shell to a prearranged extent and then arrest the said carriage; of a slide arranged crosswise of thepath of the said stop, mechanism for stopping the machine to which the testing apparatus is applied controlled .by the said slide, and means for reciprocating the said slide, said stopping mechanism being operated When'- ever the said slide misses the said stop, substantially as set forth.

4. In apparatus for testing cartridgeshells, the combination, with a slidable carriage provided with a stop and carryinga testing-needie; of a slide arranged crosswise of the path of the said stop, a spring pressing the slide toward the carriage, means for retracting the slide intermittently, mechanism for stopping the machine to which the testing apparatus is applied controlled by the said slide, and driving devices operating to move the slide to an additional extent toward the carriage whenever the slide misses the said stop, thereby constraining the said slide to operate-the said stopping mechanism, substantially as set forth.

` Whenever the slide misses the 5. In apparatus for testing cartridge-shells, I the combination with a slidable carriage pro- 1 vided with a stop and carrying a testing-needle; of a slide arranged crosswise of the path of the said stop, a spring pressing the slide toward the carriage, means for retracting the slide intermittently, mechanism for stopping the machine to which the testing apparatus is applied controlled by the said slide, a driving-lever provided witha projecting pin, a spring-pressed catch carried by the said slide and engaging automatically with the said pin stop, and means for oscillating the said lever, said' lever operating to move the said slide .to an additional extent toward the carriage andv thereby convstraining the slide to operate the said stoppingv mechanism, substantially as set forth.

6. In apparatus for testing cartridge-shells,

the combination,with two independently-slidable carriages arranged side by side, each carriage being provided with a stop and a testingneedle; of two independently-slidable slides arranged'iside by-side and crosswise of the paths of the respective stops, springs pressing the slides toward the carriages, means for retracting the slides simultaneously, and mechanism for stopping the machine to which the testing mechanism is applied operatively connected with each said slide and controlled by it, substantially as set forth.

In testimony'whereof I afli'x my signature in presence of two witnesses.

' .PAUL PONDORF. Witnesses:

- OTTO KOLBE, FRITZ Mnn'rz. 

